Why Reinvent The Wheel?

Don't bother! It's definitely interesting to learn how to set up a name server but, unless you are setting up your own hosting, it's an exercise without merit.

Anywhere you register your domain name or choose to host your website will have their own domain name server setup. In rare cases, where you hold thousands of domains and need to have a specialized setup between them, you may want to learn. Otherwise, it's best to leave it to the professionals.